Datasheet Summary
NEW PRNOEDWUCPTRODUCT
74HC164 8-BIT PARALLEL-OUT SERIAL SHIFT RE4G0I0STERS
Description
The 74HC164 is a serial input 8-bit edge-triggered shift register that has outputs from each of eight stages.
SERIAL DATA INPUT PINS The serial input data is entered at pin SDA or pin SDB as these are logically ANDED. Either input could be used as an active HIGH enable with data entry on the other pin. If a single input is desired, the pins can be tied together or the unused input can be tied HIGH.
DATA ENTRY Data is shifted into Q0 from the serial input pins on each LOW to HIGH transition of the CP pin. Also during the CP edge the data is transferred from each Qn to Qn+1. The serial data on pins DSA...